[fio.git] / filesetup.c

#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <assert.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/types.h>

#include "fio.h"

static int root_warn;

static int extend_file(struct thread_data *td, struct fio_file *f)
{
	int r, new_layout = 0, unlink_file = 0, flags;
	unsigned long long left;
	unsigned int bs;
	char *b;

	/*
	 * check if we need to lay the file out complete again. fio
	 * does that for operations involving reads, or for writes
	 * where overwrite is set
	 */
	if (td_read(td) || (td_write(td) && td->o.overwrite))
		new_layout = 1;
	if (td_write(td) && !td->o.overwrite)
		unlink_file = 1;

	if ((unlink_file || new_layout) && (f->flags & FIO_FILE_EXISTS)) {
		if (unlink(f->file_name) < 0) {
			td_verror(td, errno, "unlink");
			return 1;
		}
	}

	flags = O_WRONLY | O_CREAT;
	if (new_layout)
		flags |= O_TRUNC;

	f->fd = open(f->file_name, flags, 0644);
	if (f->fd < 0) {
		td_verror(td, errno, "open");
		return 1;
	}

	if (ftruncate(f->fd, f->real_file_size) == -1) {
		td_verror(td, errno, "ftruncate");
		goto err;
	}

	if (!new_layout)
		goto done;

	if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
		td_verror(td, errno, "posix_fallocate");
		goto err;
	}

	b = malloc(td->o.max_bs[DDIR_WRITE]);
	memset(b, 0, td->o.max_bs[DDIR_WRITE]);

	left = f->real_file_size;
	while (left && !td->terminate) {
		bs = td->o.max_bs[DDIR_WRITE];
		if (bs > left)
			bs = left;

		r = write(f->fd, b, bs);

		if (r == (int) bs) {
			left -= bs;
			continue;
		} else {
			if (r < 0)
				td_verror(td, errno, "write");
			else
				td_verror(td, EIO, "write");

			break;
		}
	}

	if (td->terminate)
		unlink(f->file_name);
	else if (td->o.create_fsync)
		fsync(f->fd);

	free(b);
done:
	close(f->fd);
	f->fd = -1;
	return 0;
err:
	close(f->fd);
	f->fd = -1;
	return 1;
}

static unsigned long long get_rand_file_size(struct thread_data *td)
{
	unsigned long long ret;
	long r;

	r = os_random_long(&td->file_size_state);
	ret = td->o.file_size_low + (unsigned long long) ((double) (td->o.file_size_high - td->o.file_size_low) * (r / (RAND_MAX + 1.0)));
	ret -= (ret % td->o.rw_min_bs);
	return ret;
}

static int file_size(struct thread_data *td, struct fio_file *f)
{
	struct stat st;

	if (fstat(f->fd, &st) == -1) {
		td_verror(td, errno, "fstat");
		return 1;
	}

	f->real_file_size = st.st_size;
	return 0;
}

static int bdev_size(struct thread_data *td, struct fio_file *f)
{
	unsigned long long bytes;
	int r;

	r = blockdev_size(f->fd, &bytes);
	if (r) {
		td_verror(td, r, "blockdev_size");
		return 1;
	}

	f->real_file_size = bytes;
	return 0;
}

static int get_file_size(struct thread_data *td, struct fio_file *f)
{
	int ret = 0;

	if (f->flags & FIO_SIZE_KNOWN)
		return 0;

	if (f->filetype == FIO_TYPE_FILE)
		ret = file_size(td, f);
	else if (f->filetype == FIO_TYPE_BD)
		ret = bdev_size(td, f);
	else
		f->real_file_size = -1;

	if (ret)
		return ret;

	if (f->file_offset > f->real_file_size) {
		log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
		return 1;
	}

	f->flags |= FIO_SIZE_KNOWN;
	return 0;
}

int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
{
	int ret = 0;

	if (td->o.odirect)
		return 0;

	/*
	 * FIXME: add blockdev flushing too
	 */
	if (f->mmap)
		ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
	else if (f->filetype == FIO_TYPE_FILE)
		ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
	else if (f->filetype == FIO_TYPE_BD) {
		ret = blockdev_invalidate_cache(f->fd);
		if (ret < 0 && errno == EACCES && geteuid()) {
			if (!root_warn) {
				log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
				root_warn = 1;
			}
			ret = 0;
		}
	} else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
		ret = 0;

	if (ret < 0) {
		td_verror(td, errno, "invalidate_cache");
		return 1;
	}

	return ret;
}

void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
{
	close(f->fd);
	f->fd = -1;
}

int generic_open_file(struct thread_data *td, struct fio_file *f)
{
	int is_std = 0;
	int flags = 0;

	if (!strcmp(f->file_name, "-")) {
		if (td_rw(td)) {
			log_err("fio: can't read/write to stdin/out\n");
			return 1;
		}
		is_std = 1;

		/*
		 * move output logging to stderr, if we are writing to stdout
		 */
		if (td_write(td))
			f_out = stderr;
	}

	if (td->o.odirect)
		flags |= OS_O_DIRECT;
	if (td->o.sync_io)
		flags |= O_SYNC;

	if (td_write(td)) {
		flags |= O_RDWR;

		if (f->filetype == FIO_TYPE_FILE)
			flags |= O_CREAT;

		if (is_std)
			f->fd = dup(STDOUT_FILENO);
		else
			f->fd = open(f->file_name, flags, 0600);
	} else {
		if (f->filetype == FIO_TYPE_CHAR)
			flags |= O_RDWR;
		else
			flags |= O_RDONLY;

		if (is_std)
			f->fd = dup(STDIN_FILENO);
		else
			f->fd = open(f->file_name, flags);
	}

	if (f->fd == -1) {
		char buf[FIO_VERROR_SIZE];
		int __e = errno;

		snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);

		td_verror(td, __e, buf);
	}

	if (get_file_size(td, f))
		goto err;

	return 0;
err:
	close(f->fd);
	return 1;
}

int open_files(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;
	int err = 0;

	for_each_file(td, f, i) {
		err = td_io_open_file(td, f);
		if (err) {
			if (td->error == EMFILE) {
				log_err("fio: limited open files to: %d\n", td->nr_open_files);
				td->o.open_files = td->nr_open_files;
				err = 0;
				clear_error(td);
			}
			break;
		}

		if (td->o.open_files == td->nr_open_files)
			break;
	}

	if (!err)
		return 0;

	for_each_file(td, f, i)
		td_io_close_file(td, f);

	return err;
}

/*
 * open/close all files, so that ->real_file_size gets set
 */
static int get_file_sizes(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;
	int err = 0;

	for_each_file(td, f, i) {
		if (td->io_ops->open_file(td, f)) {
			if (td->error != ENOENT) {
				log_err("%s\n", td->verror);
				err = 1;
			}
			clear_error(td);
		} else {
			if (td->io_ops->close_file)
				td->io_ops->close_file(td, f);
		}

		if (f->real_file_size == -1ULL && td->o.size)
			f->real_file_size = td->o.size / td->o.nr_files;
	}

	return err;
}

/*
 * Open the files and setup files sizes, creating files if necessary.
 */
int setup_files(struct thread_data *td)
{
	unsigned long long total_size, extend_size;
	struct fio_file *f;
	unsigned int i;
	int err = 0, need_extend;

	/*
	 * if ioengine defines a setup() method, it's responsible for
	 * opening the files and setting f->real_file_size to indicate
	 * the valid range for that file.
	 */
	if (td->io_ops->setup)
		err = td->io_ops->setup(td);
	else
		err = get_file_sizes(td);

	if (err)
		return err;

	/*
	 * check sizes. if the files/devices do not exist and the size
	 * isn't passed to fio, abort.
	 */
	total_size = 0;
	for_each_file(td, f, i) {
		if (f->real_file_size == -1ULL)
			total_size = -1ULL;
		else
			total_size += f->real_file_size;
	}

	/*
	 * device/file sizes are zero and no size given, punt
	 */
	if ((!total_size || total_size == -1ULL) && !td->o.size) {
		log_err("%s: you need to specify size=\n", td->o.name);
		td_verror(td, EINVAL, "total_file_size");
		return 1;
	}

	/*
	 * now file sizes are known, so we can set ->io_size. if size= is
	 * not given, ->io_size is just equal to ->real_file_size. if size
	 * is given, ->io_size is size / nr_files.
	 */
	extend_size = total_size = 0;
	need_extend = 0;
	for_each_file(td, f, i) {
		f->file_offset = td->o.start_offset;

		if (!td->o.file_size_low) {
			/*
			 * no file size range given, file size is equal to
			 * total size divided by number of files. if that is
			 * zero, set it to the real file size.
			 */
			f->io_size = td->o.size / td->o.nr_files;
			if (!f->io_size) {
				if (f->file_offset > f->real_file_size)
					goto err_offset;
				f->io_size = f->real_file_size - f->file_offset;
			}
		} else if (f->real_file_size < td->o.file_size_low ||
			   f->real_file_size > td->o.file_size_high) {
			if (f->file_offset > td->o.file_size_low) 
				goto err_offset;
			/*
			 * file size given. if it's fixed, use that. if it's a
			 * range, generate a random size in-between.
			 */
			if (td->o.file_size_low == td->o.file_size_high)
				f->io_size = td->o.file_size_low - f->file_offset;
			else
				f->io_size = get_rand_file_size(td) - f->file_offset;
		} else if (f->file_offset > f->real_file_size)
			goto err_offset;
		else
			f->io_size = f->real_file_size - f->file_offset;

		if (f->io_size == -1ULL)
			total_size = -1ULL;
		else
			total_size += f->io_size;

		if (f->filetype == FIO_TYPE_FILE &&
		    (f->io_size + f->file_offset) > f->real_file_size &&
		    !(td->io_ops->flags & FIO_DISKLESSIO)) {
			need_extend++;
			extend_size += (f->io_size + f->file_offset);
			f->flags |= FIO_FILE_EXTEND;
		}	
	}

	if (!td->o.size || td->o.size > total_size)
		td->o.size = total_size;

	/*
	 * See if we need to extend some files
	 */
	if (need_extend) {
		temp_stall_ts = 1;
		log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
			td->o.name, need_extend, extend_size >> 20);

		for_each_file(td, f, i) {
			if (!(f->flags & FIO_FILE_EXTEND))
				continue;

			assert(f->filetype == FIO_TYPE_FILE);
			f->flags &= ~FIO_FILE_EXTEND;
			f->real_file_size = (f->io_size + f->file_offset);
			err = extend_file(td, f);
			if (err)
				break;
		}
		temp_stall_ts = 0;
	}

	if (err)
		return err;

	if (!td->o.zone_size)
		td->o.zone_size = td->o.size;

	td->total_io_size = td->o.size * td->o.loops;
	return 0;
err_offset:
	log_err("%s: you need to specify valid offset=\n", td->o.name);
	return 1;
}

int init_random_map(struct thread_data *td)
{
	int num_maps, blocks;
	struct fio_file *f;
	unsigned int i;

	if (td->o.norandommap)
		return 0;

	for_each_file(td, f, i) {
		blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
		num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
		f->file_map = malloc(num_maps * sizeof(long));
		if (!f->file_map) {
			log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
			return 1;
		}
		f->num_maps = num_maps;
		memset(f->file_map, 0, num_maps * sizeof(long));
	}

	return 0;
}

void close_files(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;

	for_each_file(td, f, i) {
		if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
			unlink(f->file_name);

		td_io_close_file(td, f);

		free(f->file_name);
		f->file_name = NULL;

		if (f->file_map) {
			free(f->file_map);
			f->file_map = NULL;
		}
	}

	td->o.filename = NULL;
	free(td->files);
	td->files = NULL;
	td->o.nr_files = 0;
}

static void get_file_type(struct fio_file *f)
{
	struct stat sb;

	if (!strcmp(f->file_name, "-"))
		f->filetype = FIO_TYPE_PIPE;
	else
		f->filetype = FIO_TYPE_FILE;

	if (!lstat(f->file_name, &sb)) {
		if (S_ISBLK(sb.st_mode))
			f->filetype = FIO_TYPE_BD;
		else if (S_ISCHR(sb.st_mode))
			f->filetype = FIO_TYPE_CHAR;
		else if (S_ISFIFO(sb.st_mode))
			f->filetype = FIO_TYPE_PIPE;
	}
}

int add_file(struct thread_data *td, const char *fname)
{
	int cur_files = td->files_index;
	char file_name[PATH_MAX];
	struct fio_file *f;
	int len = 0;

	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));

	f = &td->files[cur_files];
	memset(f, 0, sizeof(*f));
	f->fd = -1;

	/*
	 * init function, io engine may not be loaded yet
	 */
	if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
		f->real_file_size = -1ULL;

	if (td->o.directory)
		len = sprintf(file_name, "%s/", td->o.directory);

	sprintf(file_name + len, "%s", fname);
	f->file_name = strdup(file_name);

	get_file_type(f);

	td->files_index++;
	if (f->filetype == FIO_TYPE_FILE)
		td->nr_normal_files++;

	return cur_files;
}

void get_file(struct fio_file *f)
{
	assert(f->flags & FIO_FILE_OPEN);
	f->references++;
}

void put_file(struct thread_data *td, struct fio_file *f)
{
	if (!(f->flags & FIO_FILE_OPEN))
		return;

	assert(f->references);
	if (--f->references)
		return;

	if (should_fsync(td) && td->o.fsync_on_close)
		fsync(f->fd);

	if (td->io_ops->close_file)
		td->io_ops->close_file(td, f);

	td->nr_open_files--;
	f->flags &= ~FIO_FILE_OPEN;
}

static int recurse_dir(struct thread_data *td, const char *dirname)
{
	struct dirent *dir;
	int ret = 0;
	DIR *D;

	D = opendir(dirname);
	if (!D) {
		char buf[FIO_VERROR_SIZE];

		snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
		td_verror(td, errno, buf);
		return 1;
	}

	while ((dir = readdir(D)) != NULL) {
		char full_path[PATH_MAX];
		struct stat sb;

		if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
			continue;

		sprintf(full_path, "%s/%s", dirname, dir->d_name);

		if (lstat(full_path, &sb) == -1) {
			if (errno != ENOENT) {
				td_verror(td, errno, "stat");
				return 1;
			}
		}

		if (S_ISREG(sb.st_mode)) {
			add_file(td, full_path);
			td->o.nr_files++;
			continue;
		}
		if (!S_ISDIR(sb.st_mode))
			continue;

		if ((ret = recurse_dir(td, full_path)) != 0)
			break;
	}

	closedir(D);
	return ret;
}

int add_dir_files(struct thread_data *td, const char *path)
{
	int ret = recurse_dir(td, path);

	if (!ret)
		log_info("fio: opendir added %d files\n", td->o.nr_files);

	return ret;
}

void dup_files(struct thread_data *td, struct thread_data *org)
{
	struct fio_file *f;
	unsigned int i;
	size_t bytes;

	if (!org->files)
		return;

	bytes = org->files_index * sizeof(*f);
	td->files = malloc(bytes);
	memcpy(td->files, org->files, bytes);

	for_each_file(td, f, i) {
		if (f->file_name)
			f->file_name = strdup(f->file_name);
	}
}

/*
 * Returns the index that matches the filename, or -1 if not there
 */
int get_fileno(struct thread_data *td, const char *fname)
{
	struct fio_file *f;
	unsigned int i;

	for_each_file(td, f, i)
		if (!strcmp(f->file_name, fname))
			return i;

	return -1;
}

/*
 * For log usage, where we add/open/close files automatically
 */
void free_release_files(struct thread_data *td)
{
	close_files(td);
	td->files_index = 0;
	td->nr_normal_files = 0;
}
Commit	Line	Data
53cdc686 JA	1	#include <unistd.h>
	2	#include <fcntl.h>
	3	#include <string.h>
	4	#include <assert.h>
bbf6b540	5	#include <dirent.h>
53cdc686 JA	6	#include <sys/stat.h>
53cdc686 JA	7	#include <sys/mman.h>
bbf6b540	8	#include <sys/types.h>
53cdc686 JA	9
53cdc686 JA	10	#include "fio.h"
53cdc686	11
7172cfe8 JA	12	static int root_warn;
7172cfe8 JA	13
7bb48f84	14	static int extend_file(struct thread_data td, struct fio_file f)
25205e97	15	{
ea443657	16	int r, new_layout = 0, unlink_file = 0, flags;
25205e97 JA	17	unsigned long long left;
	18	unsigned int bs;
	19	char *b;
b2a15192	20
507a702f JA	21	/*
	22	* check if we need to lay the file out complete again. fio
	23	* does that for operations involving reads, or for writes
	24	* where overwrite is set
	25	*/
	26	if (td_read(td) \|\| (td_write(td) && td->o.overwrite))
	27	new_layout = 1;
ea443657 JA	28	if (td_write(td) && !td->o.overwrite)
ea443657 JA	29	unlink_file = 1;
507a702f	30
ea443657	31	if ((unlink_file \|\| new_layout) && (f->flags & FIO_FILE_EXISTS)) {
7bb48f84 JA	32	if (unlink(f->file_name) < 0) {
	33	td_verror(td, errno, "unlink");
	34	return 1;
	35	}
	36	}
	37
507a702f JA	38	flags = O_WRONLY \| O_CREAT;
	39	if (new_layout)
	40	flags \|= O_TRUNC;
	41
	42	f->fd = open(f->file_name, flags, 0644);
53cdc686	43	if (f->fd < 0) {
e1161c32	44	td_verror(td, errno, "open");
53cdc686 JA	45	return 1;
	46	}
	47
7bb48f84	48	if (ftruncate(f->fd, f->real_file_size) == -1) {
e1161c32	49	td_verror(td, errno, "ftruncate");
53cdc686 JA	50	goto err;
	51	}
	52
e8be2ad7 JA	53	if (!new_layout)
	54	goto done;
	55
7bb48f84	56	if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
e1161c32	57	td_verror(td, errno, "posix_fallocate");
40f8298c JA	58	goto err;
	59	}
	60
2dc1bbeb JA	61	b = malloc(td->o.max_bs[DDIR_WRITE]);
2dc1bbeb JA	62	memset(b, 0, td->o.max_bs[DDIR_WRITE]);
53cdc686	63
7bb48f84	64	left = f->real_file_size;
53cdc686	65	while (left && !td->terminate) {
2dc1bbeb	66	bs = td->o.max_bs[DDIR_WRITE];
53cdc686 JA	67	if (bs > left)
	68	bs = left;
	69
	70	r = write(f->fd, b, bs);
	71
	72	if (r == (int) bs) {
	73	left -= bs;
	74	continue;
	75	} else {
	76	if (r < 0)
e1161c32	77	td_verror(td, errno, "write");
53cdc686	78	else
e1161c32	79	td_verror(td, EIO, "write");
53cdc686 JA	80
	81	break;
	82	}
	83	}
	84
	85	if (td->terminate)
	86	unlink(f->file_name);
2dc1bbeb	87	else if (td->o.create_fsync)
53cdc686 JA	88	fsync(f->fd);
	89
	90	free(b);
507a702f	91	done:
53cdc686 JA	92	close(f->fd);
	93	f->fd = -1;
	94	return 0;
	95	err:
	96	close(f->fd);
	97	f->fd = -1;
	98	return 1;
	99	}
	100
7bb48f84	101	static unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64	102	{
9c60ce64 JA	103	unsigned long long ret;
	104	long r;
	105
9c60ce64	106	r = os_random_long(&td->file_size_state);
d11a531f	107	ret = td->o.file_size_low + (unsigned long long) ((double) (td->o.file_size_high - td->o.file_size_low) * (r / (RAND_MAX + 1.0)));
2dc1bbeb	108	ret -= (ret % td->o.rw_min_bs);
9c60ce64 JA	109	return ret;
	110	}
	111
53cdc686 JA	112	static int file_size(struct thread_data td, struct fio_file f)
	113	{
	114	struct stat st;
	115
7bb48f84 JA	116	if (fstat(f->fd, &st) == -1) {
	117	td_verror(td, errno, "fstat");
	118	return 1;
	119	}
53cdc686	120
7bb48f84	121	f->real_file_size = st.st_size;
53cdc686 JA	122	return 0;
	123	}
	124
	125	static int bdev_size(struct thread_data td, struct fio_file f)
	126	{
	127	unsigned long long bytes;
	128	int r;
	129
	130	r = blockdev_size(f->fd, &bytes);
	131	if (r) {
e1161c32	132	td_verror(td, r, "blockdev_size");
53cdc686 JA	133	return 1;
	134	}
	135
	136	f->real_file_size = bytes;
53cdc686 JA	137	return 0;
	138	}
	139
	140	static int get_file_size(struct thread_data td, struct fio_file f)
	141	{
	142	int ret = 0;
	143
409b3417 JA	144	if (f->flags & FIO_SIZE_KNOWN)
	145	return 0;
	146
7bb48f84 JA	147	if (f->filetype == FIO_TYPE_FILE)
	148	ret = file_size(td, f);
	149	else if (f->filetype == FIO_TYPE_BD)
53cdc686 JA	150	ret = bdev_size(td, f);
	151	else
	152	f->real_file_size = -1;
	153
	154	if (ret)
	155	return ret;
	156
	157	if (f->file_offset > f->real_file_size) {
2dc1bbeb	158	log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
53cdc686 JA	159	return 1;
	160	}
	161
409b3417	162	f->flags \|= FIO_SIZE_KNOWN;
53cdc686 JA	163	return 0;
	164	}
	165
e5b401d4 JA	166	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	167	{
	168	int ret = 0;
	169
2dc1bbeb	170	if (td->o.odirect)
b5af8293 JA	171	return 0;
b5af8293 JA	172
e5b401d4 JA	173	/*
	174	* FIXME: add blockdev flushing too
	175	*/
b5af8293	176	if (f->mmap)
7bb48f84	177	ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
467d1b6b	178	else if (f->filetype == FIO_TYPE_FILE)
7bb48f84	179	ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
7e0e25c9	180	else if (f->filetype == FIO_TYPE_BD) {
b5af8293	181	ret = blockdev_invalidate_cache(f->fd);
7e0e25c9	182	if (ret < 0 && errno == EACCES && geteuid()) {
7172cfe8 JA	183	if (!root_warn) {
	184	log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
	185	root_warn = 1;
	186	}
7e0e25c9 JA	187	ret = 0;
7e0e25c9 JA	188	}
b5605e9d	189	} else if (f->filetype == FIO_TYPE_CHAR \|\| f->filetype == FIO_TYPE_PIPE)
e5b401d4 JA	190	ret = 0;
	191
	192	if (ret < 0) {
e1161c32	193	td_verror(td, errno, "invalidate_cache");
e5b401d4 JA	194	return 1;
	195	}
	196
ad2da605	197	return ret;
e5b401d4 JA	198	}
e5b401d4 JA	199
b5af8293	200	void generic_close_file(struct thread_data fio_unused td, struct fio_file f)
53cdc686	201	{
b5af8293 JA	202	close(f->fd);
b5af8293 JA	203	f->fd = -1;
53cdc686 JA	204	}
53cdc686 JA	205
b5af8293	206	int generic_open_file(struct thread_data td, struct fio_file f)
53cdc686	207	{
66159828	208	int is_std = 0;
53cdc686 JA	209	int flags = 0;
53cdc686 JA	210
66159828 JA	211	if (!strcmp(f->file_name, "-")) {
	212	if (td_rw(td)) {
	213	log_err("fio: can't read/write to stdin/out\n");
	214	return 1;
	215	}
	216	is_std = 1;
ce98fa66 JA	217
	218	/*
	219	* move output logging to stderr, if we are writing to stdout
	220	*/
	221	if (td_write(td))
	222	f_out = stderr;
66159828 JA	223	}
66159828 JA	224
2dc1bbeb	225	if (td->o.odirect)
2fd233b7	226	flags \|= OS_O_DIRECT;
2dc1bbeb	227	if (td->o.sync_io)
2fd233b7	228	flags \|= O_SYNC;
53cdc686	229
660a1cb5	230	if (td_write(td)) {
2fd233b7	231	flags \|= O_RDWR;
53cdc686	232
af52b345	233	if (f->filetype == FIO_TYPE_FILE)
2fd233b7	234	flags \|= O_CREAT;
2fd233b7	235
66159828 JA	236	if (is_std)
	237	f->fd = dup(STDOUT_FILENO);
	238	else
	239	f->fd = open(f->file_name, flags, 0600);
2fd233b7	240	} else {
af52b345	241	if (f->filetype == FIO_TYPE_CHAR)
2fd233b7 JA	242	flags \|= O_RDWR;
	243	else
	244	flags \|= O_RDONLY;
	245
66159828 JA	246	if (is_std)
	247	f->fd = dup(STDIN_FILENO);
	248	else
	249	f->fd = open(f->file_name, flags);
53cdc686 JA	250	}
	251
	252	if (f->fd == -1) {
e4e33258	253	char buf[FIO_VERROR_SIZE];
e1161c32 JA	254	int __e = errno;
e1161c32 JA	255
e4e33258 JA	256	snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
	257
	258	td_verror(td, __e, buf);
53cdc686 JA	259	}
53cdc686 JA	260
b5af8293 JA	261	if (get_file_size(td, f))
	262	goto err;
	263
53cdc686	264	return 0;
b5af8293 JA	265	err:
	266	close(f->fd);
	267	return 1;
	268	}
	269
21972cde JA	270	int open_files(struct thread_data *td)
	271	{
	272	struct fio_file *f;
af52b345 JA	273	unsigned int i;
af52b345 JA	274	int err = 0;
21972cde JA	275
21972cde JA	276	for_each_file(td, f, i) {
b5af8293	277	err = td_io_open_file(td, f);
9bf27b45 JA	278	if (err) {
	279	if (td->error == EMFILE) {
	280	log_err("fio: limited open files to: %d\n", td->nr_open_files);
	281	td->o.open_files = td->nr_open_files;
	282	err = 0;
	283	clear_error(td);
	284	}
21972cde	285	break;
9bf27b45	286	}
b5af8293	287
2dc1bbeb	288	if (td->o.open_files == td->nr_open_files)
b5af8293	289	break;
21972cde JA	290	}
21972cde JA	291
7abf833d JA	292	if (!err)
	293	return 0;
	294
bdb4e2e9	295	for_each_file(td, f, i)
b5af8293	296	td_io_close_file(td, f);
7abf833d	297
21972cde JA	298	return err;
	299	}
	300
7bb48f84 JA	301	/*
	302	* open/close all files, so that ->real_file_size gets set
	303	*/
bab3fd58	304	static int get_file_sizes(struct thread_data *td)
7bb48f84 JA	305	{
	306	struct fio_file *f;
	307	unsigned int i;
bab3fd58	308	int err = 0;
7bb48f84 JA	309
7bb48f84 JA	310	for_each_file(td, f, i) {
bab3fd58	311	if (td->io_ops->open_file(td, f)) {
40b44f4a JA	312	if (td->error != ENOENT) {
	313	log_err("%s\n", td->verror);
	314	err = 1;
	315	}
541d66d7	316	clear_error(td);
07eb79df JA	317	} else {
	318	if (td->io_ops->close_file)
	319	td->io_ops->close_file(td, f);
	320	}
409b3417 JA	321
	322	if (f->real_file_size == -1ULL && td->o.size)
	323	f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84	324	}
bab3fd58 JA	325
bab3fd58 JA	326	return err;
7bb48f84 JA	327	}
	328
	329	/*
	330	* Open the files and setup files sizes, creating files if necessary.
	331	*/
53cdc686 JA	332	int setup_files(struct thread_data *td)
53cdc686 JA	333	{
7bb48f84	334	unsigned long long total_size, extend_size;
53cdc686	335	struct fio_file *f;
af52b345	336	unsigned int i;
000b0803	337	int err = 0, need_extend;
53cdc686 JA	338
	339	/*
	340	* if ioengine defines a setup() method, it's responsible for
7bb48f84 JA	341	* opening the files and setting f->real_file_size to indicate
7bb48f84 JA	342	* the valid range for that file.
53cdc686 JA	343	*/
53cdc686 JA	344	if (td->io_ops->setup)
7bb48f84 JA	345	err = td->io_ops->setup(td);
7bb48f84 JA	346	else
bab3fd58	347	err = get_file_sizes(td);
53cdc686	348
f1027063 JA	349	if (err)
	350	return err;
	351
0a7eb121	352	/*
7bb48f84 JA	353	* check sizes. if the files/devices do not exist and the size
7bb48f84 JA	354	* isn't passed to fio, abort.
0a7eb121	355	*/
7bb48f84 JA	356	total_size = 0;
	357	for_each_file(td, f, i) {
	358	if (f->real_file_size == -1ULL)
	359	total_size = -1ULL;
	360	else
	361	total_size += f->real_file_size;
	362	}
0a7eb121	363
7bb48f84 JA	364	/*
	365	* device/file sizes are zero and no size given, punt
	366	*/
409b3417	367	if ((!total_size \|\| total_size == -1ULL) && !td->o.size) {
7bb48f84	368	log_err("%s: you need to specify size=\n", td->o.name);
e1161c32	369	td_verror(td, EINVAL, "total_file_size");
53cdc686 JA	370	return 1;
	371	}
	372
7bb48f84 JA	373	/*
	374	* now file sizes are known, so we can set ->io_size. if size= is
	375	* not given, ->io_size is just equal to ->real_file_size. if size
	376	* is given, ->io_size is size / nr_files.
	377	*/
	378	extend_size = total_size = 0;
	379	need_extend = 0;
	380	for_each_file(td, f, i) {
bcdedd0a YHJT	381	f->file_offset = td->o.start_offset;
bcdedd0a YHJT	382
7bb48f84 JA	383	if (!td->o.file_size_low) {
	384	/*
	385	* no file size range given, file size is equal to
	386	* total size divided by number of files. if that is
	387	* zero, set it to the real file size.
	388	*/
	389	f->io_size = td->o.size / td->o.nr_files;
bcdedd0a YHJT	390	if (!f->io_size) {
	391	if (f->file_offset > f->real_file_size)
	392	goto err_offset;
	393	f->io_size = f->real_file_size - f->file_offset;
	394	}
7bb48f84 JA	395	} else if (f->real_file_size < td->o.file_size_low \|\|
7bb48f84 JA	396	f->real_file_size > td->o.file_size_high) {
bcdedd0a YHJT	397	if (f->file_offset > td->o.file_size_low)
bcdedd0a YHJT	398	goto err_offset;
7bb48f84 JA	399	/*
	400	* file size given. if it's fixed, use that. if it's a
	401	* range, generate a random size in-between.
	402	*/
	403	if (td->o.file_size_low == td->o.file_size_high)
bcdedd0a	404	f->io_size = td->o.file_size_low - f->file_offset;
7bb48f84	405	else
bcdedd0a YHJT	406	f->io_size = get_rand_file_size(td) - f->file_offset;
	407	} else if (f->file_offset > f->real_file_size)
	408	goto err_offset;
	409	else
	410	f->io_size = f->real_file_size - f->file_offset;
53cdc686	411
7bb48f84 JA	412	if (f->io_size == -1ULL)
	413	total_size = -1ULL;
	414	else
	415	total_size += f->io_size;
	416
	417	if (f->filetype == FIO_TYPE_FILE &&
bcdedd0a	418	(f->io_size + f->file_offset) > f->real_file_size &&
7bb48f84 JA	419	!(td->io_ops->flags & FIO_DISKLESSIO)) {
7bb48f84 JA	420	need_extend++;
bcdedd0a	421	extend_size += (f->io_size + f->file_offset);
7bb48f84	422	f->flags \|= FIO_FILE_EXTEND;
bcdedd0a	423	}
7bb48f84	424	}
53cdc686	425
2298290e	426	if (!td->o.size \|\| td->o.size > total_size)
7bb48f84	427	td->o.size = total_size;
21972cde	428
7bb48f84 JA	429	/*
	430	* See if we need to extend some files
	431	*/
	432	if (need_extend) {
	433	temp_stall_ts = 1;
	434	log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
	435	td->o.name, need_extend, extend_size >> 20);
	436
	437	for_each_file(td, f, i) {
	438	if (!(f->flags & FIO_FILE_EXTEND))
	439	continue;
	440
409b3417	441	assert(f->filetype == FIO_TYPE_FILE);
7bb48f84	442	f->flags &= ~FIO_FILE_EXTEND;
bcdedd0a	443	f->real_file_size = (f->io_size + f->file_offset);
7bb48f84 JA	444	err = extend_file(td, f);
	445	if (err)
	446	break;
	447	}
	448	temp_stall_ts = 0;
	449	}
	450
	451	if (err)
	452	return err;
	453
	454	if (!td->o.zone_size)
	455	td->o.zone_size = td->o.size;
	456
	457	td->total_io_size = td->o.size * td->o.loops;
	458	return 0;
bcdedd0a YHJT	459	err_offset:
	460	log_err("%s: you need to specify valid offset=\n", td->o.name);
	461	return 1;
53cdc686 JA	462	}
53cdc686 JA	463
68727076 JA	464	int init_random_map(struct thread_data *td)
	465	{
	466	int num_maps, blocks;
	467	struct fio_file *f;
	468	unsigned int i;
	469
	470	if (td->o.norandommap)
	471	return 0;
	472
	473	for_each_file(td, f, i) {
	474	blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
	475	num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
	476	f->file_map = malloc(num_maps * sizeof(long));
	477	if (!f->file_map) {
	478	log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
	479	return 1;
	480	}
	481	f->num_maps = num_maps;
	482	memset(f->file_map, 0, num_maps * sizeof(long));
	483	}
	484
	485	return 0;
	486	}
	487
53cdc686 JA	488	void close_files(struct thread_data *td)
53cdc686 JA	489	{
0ab8db89	490	struct fio_file *f;
af52b345	491	unsigned int i;
53cdc686	492
0ab8db89	493	for_each_file(td, f, i) {
a9b7b305	494	if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
132ad46d	495	unlink(f->file_name);
bdb4e2e9	496
b5af8293	497	td_io_close_file(td, f);
b3dc7f07	498
fa1da865 JA	499	free(f->file_name);
	500	f->file_name = NULL;
	501
c343981b	502	if (f->file_map) {
b3dc7f07	503	free(f->file_map);
c343981b JA	504	f->file_map = NULL;
c343981b JA	505	}
53cdc686	506	}
b4a6a59a	507
2dc1bbeb	508	td->o.filename = NULL;
cade3ef4	509	free(td->files);
b4a6a59a	510	td->files = NULL;
2dc1bbeb	511	td->o.nr_files = 0;
53cdc686	512	}
af52b345	513
e3bab463	514	static void get_file_type(struct fio_file *f)
af52b345 JA	515	{
	516	struct stat sb;
	517
66159828 JA	518	if (!strcmp(f->file_name, "-"))
	519	f->filetype = FIO_TYPE_PIPE;
	520	else
	521	f->filetype = FIO_TYPE_FILE;
af52b345	522
e3bab463	523	if (!lstat(f->file_name, &sb)) {
af52b345 JA	524	if (S_ISBLK(sb.st_mode))
	525	f->filetype = FIO_TYPE_BD;
	526	else if (S_ISCHR(sb.st_mode))
	527	f->filetype = FIO_TYPE_CHAR;
b5605e9d JA	528	else if (S_ISFIFO(sb.st_mode))
b5605e9d JA	529	f->filetype = FIO_TYPE_PIPE;
af52b345 JA	530	}
	531	}
	532
f29b25a3	533	int add_file(struct thread_data td, const char fname)
af52b345	534	{
7b4e4fe5	535	int cur_files = td->files_index;
bd0ee748	536	char file_name[PATH_MAX];
af52b345	537	struct fio_file *f;
bd0ee748	538	int len = 0;
af52b345 JA	539
	540	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	541
	542	f = &td->files[cur_files];
	543	memset(f, 0, sizeof(*f));
	544	f->fd = -1;
bd0ee748	545
07eb79df JA	546	/*
	547	* init function, io engine may not be loaded yet
	548	*/
	549	if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
	550	f->real_file_size = -1ULL;
	551
bd0ee748 JA	552	if (td->o.directory)
	553	len = sprintf(file_name, "%s/", td->o.directory);
	554
	555	sprintf(file_name + len, "%s", fname);
	556	f->file_name = strdup(file_name);
af52b345	557
e3bab463	558	get_file_type(f);
af52b345	559
7b4e4fe5	560	td->files_index++;
1549441c JA	561	if (f->filetype == FIO_TYPE_FILE)
1549441c JA	562	td->nr_normal_files++;
f29b25a3 JA	563
f29b25a3 JA	564	return cur_files;
af52b345	565	}
0ad920e7 JA	566
	567	void get_file(struct fio_file *f)
	568	{
97af62ce	569	assert(f->flags & FIO_FILE_OPEN);
0ad920e7 JA	570	f->references++;
	571	}
	572
	573	void put_file(struct thread_data td, struct fio_file f)
	574	{
	575	if (!(f->flags & FIO_FILE_OPEN))
	576	return;
	577
	578	assert(f->references);
	579	if (--f->references)
	580	return;
	581
d424d4dd	582	if (should_fsync(td) && td->o.fsync_on_close)
ebb1415f JA	583	fsync(f->fd);
ebb1415f JA	584
0ad920e7 JA	585	if (td->io_ops->close_file)
0ad920e7 JA	586	td->io_ops->close_file(td, f);
1020a139	587
0ad920e7 JA	588	td->nr_open_files--;
	589	f->flags &= ~FIO_FILE_OPEN;
	590	}
bbf6b540 JA	591
	592	static int recurse_dir(struct thread_data td, const char dirname)
	593	{
	594	struct dirent *dir;
	595	int ret = 0;
	596	DIR *D;
	597
	598	D = opendir(dirname);
	599	if (!D) {
0ddb270c JA	600	char buf[FIO_VERROR_SIZE];
	601
	602	snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
	603	td_verror(td, errno, buf);
bbf6b540 JA	604	return 1;
	605	}
	606
	607	while ((dir = readdir(D)) != NULL) {
	608	char full_path[PATH_MAX];
	609	struct stat sb;
	610
e85b2b83 JA	611	if (!strcmp(dir->d_name, ".") \|\| !strcmp(dir->d_name, ".."))
e85b2b83 JA	612	continue;
96d32d51	613
bbf6b540 JA	614	sprintf(full_path, "%s/%s", dirname, dir->d_name);
	615
	616	if (lstat(full_path, &sb) == -1) {
	617	if (errno != ENOENT) {
	618	td_verror(td, errno, "stat");
	619	return 1;
	620	}
	621	}
	622
	623	if (S_ISREG(sb.st_mode)) {
	624	add_file(td, full_path);
2dc1bbeb	625	td->o.nr_files++;
bbf6b540 JA	626	continue;
bbf6b540 JA	627	}
0ddb270c JA	628	if (!S_ISDIR(sb.st_mode))
0ddb270c JA	629	continue;
bbf6b540	630
bbf6b540 JA	631	if ((ret = recurse_dir(td, full_path)) != 0)
	632	break;
	633	}
	634
	635	closedir(D);
	636	return ret;
	637	}
	638
	639	int add_dir_files(struct thread_data td, const char path)
	640	{
0ddb270c JA	641	int ret = recurse_dir(td, path);
	642
	643	if (!ret)
	644	log_info("fio: opendir added %d files\n", td->o.nr_files);
	645
	646	return ret;
bbf6b540	647	}
cade3ef4 JA	648
	649	void dup_files(struct thread_data td, struct thread_data org)
	650	{
	651	struct fio_file *f;
	652	unsigned int i;
	653	size_t bytes;
	654
	655	if (!org->files)
	656	return;
	657
	658	bytes = org->files_index * sizeof(*f);
	659	td->files = malloc(bytes);
	660	memcpy(td->files, org->files, bytes);
	661
	662	for_each_file(td, f, i) {
	663	if (f->file_name)
	664	f->file_name = strdup(f->file_name);
	665	}
	666	}
f29b25a3 JA	667
	668	/*
	669	* Returns the index that matches the filename, or -1 if not there
	670	*/
	671	int get_fileno(struct thread_data td, const char fname)
	672	{
	673	struct fio_file *f;
	674	unsigned int i;
	675
	676	for_each_file(td, f, i)
	677	if (!strcmp(f->file_name, fname))
	678	return i;
	679
	680	return -1;
	681	}
	682
	683	/*
	684	* For log usage, where we add/open/close files automatically
	685	*/
	686	void free_release_files(struct thread_data *td)
	687	{
	688	close_files(td);
	689	td->files_index = 0;
	690	td->nr_normal_files = 0;
	691	}